lib/python/Components/BlinkingPixmap.py

   1 from HTMLComponent import *
   2 from GUIComponent import *
   3
   4 from Pixmap import Pixmap
   5
   6 from enigma import *
   7
   8 import time
   9
  10 class BlinkingPixmap(GUIComponent, Pixmap):
  11         SHOWN = 0
  12         HIDDEN = 1
  13
  14         def __init__(self):
  15                 Pixmap.__init__(self)
  16                 GUIComponent.__init__(self)
  17
  18                 self.state = self.SHOWN
  19                 self.blinking = False
  20
  21                 self.setBlinkTime(500)
  22
  23                 self.timer = eTimer()
  24                 self.timer.timeout.get().append(self.blink)
  25
  26
  27         def createWidget(self, parent):
  28                 return self.getePixmap(parent)
  29
  30         def removeWidget(self, w):
  31                 pass
  32
  33         def showPixmap(self):
  34                 print "Show pixmap"
  35                 self.state = self.SHOWN
  36                 self.instance.show()
  37
  38         def hidePixmap(self):
  39                 print "Hide pixmap"
  40                 self.state = self.HIDDEN
  41                 self.instance.hide()
  42
  43         def setBlinkTime(self, time):
  44                 self.blinktime = time
  45
  46         def blink(self):
  47                 if self.blinking == True:
  48                         if (self.state == self.SHOWN):
  49                                 self.hidePixmap()
  50                         elif (self.state == self.HIDDEN):
  51                                 self.showPixmap()
  52
  53         def startBlinking(self):
  54                 self.blinking = True
  55                 self.timer.start(self.blinktime)
  56
  57         def stopBlinking(self):
  58                 self.blinking = False
  59                 if (self.state == self.SHOWN):
  60                         self.hidePixmap()
  61                 self.timer.stop()
  62
  63 class BlinkingPixmapConditional(BlinkingPixmap):
  64         def __init__(self):
  65                 BlinkingPixmap.__init__(self)
  66
  67                 self.setConnect(None)
  68
  69                 self.conditionCheckTimer = eTimer()
  70                 self.conditionCheckTimer.timeout.get().append(self.conditionallyBlink)
  71                 self.conditionCheckTimer.start(1000)
  72
  73         def setConnect(self, conditionalFunction):
  74                 self.conditionalFunction = conditionalFunction
  75
  76         def conditionallyBlink(self):
  77                 try:
  78                         self.conditionalFunction() # check, if the conditionalfunction is still valid
  79                 except:
  80                         self.conditionalFunction = None
  81                         self.stopBlinking()
  82
  83                 if self.conditionalFunction != None:
  84                         if self.conditionalFunction(): # we shall blink
  85                                 if self.blinking: # we are already blinking
  86                                         pass
  87                                 else: # we don't blink
  88                                         self.startBlinking()
  89                         else: # we shall not blink
  90                                 if self.blinking: # we are blinking
  91                                         self.stopBlinking()
  92                                 else: # we don't blink
  93                                         pass